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Sun Cluster 3.0 Hardware Guide

How to Add a StorEdge MultiPack Enclosure

Use this procedure to install a StorEdge MultiPack enclosure in an existing cluster. Perform the steps in this procedure in conjunction with the procedures in Sun Cluster 3.0 Installation Guide and your server hardware manual.

For conceptual information on multi-initiator SCSI and device IDs, see Sun Cluster 3.0 Concepts.

  1. Ensure that each device in the SCSI chain has a unique SCSI address.

    The default SCSI address for host adapters is 7. Reserve SCSI address 7 for one host adapter in the SCSI chain. This procedure refers to the host adapter you choose for SCSI address 7 as the host adapter on the second node. To avoid conflicts, in Step 7 you will change the scsi-initiator-id of the remaining host adapter in the SCSI chain to an available SCSI address. This procedure refers to the host adapter with an available SCSI address as the host adapter on the first node. Depending on the device and configuration settings of the device, either SCSI address 6 or 8 is usually available.

    Caution - Caution -

    Even though a slot in the enclosure might not be in use, you should avoid setting the scsi-initiator-id for the first node to the SCSI address for that disk slot. This precaution minimizes future complications if you install additional disk drives.

    For more information, see the OpenBoot 3.x Command Reference Manual and the labels inside the storage device.

  2. Shut down and power off the first node.


    # scswitch -S -h nodename
# shutdown -y -g 0

    For more information, see Sun Cluster 3.0 System Administration Guide.

  3. Install the host adapters in the node.

    For the procedure on installing host adapters, see the documentation that shipped with your host adapters and nodes.

  4. Connect the single-ended SCSI cable between the node and the enclosures, as shown in Figure 4-2.

    Make sure that the entire SCSI bus length to each enclosure is less than 6 m. This measurement includes the cables to both nodes, as well as the bus length internal to each enclosure, node, and host adapter. Refer to the documentation that shipped with the enclosure for other restrictions regarding SCSI operation.

    Figure 4-2 Example of a StorEdge MultiPack enclosure mirrored pair

    Graphic

  5. Temporarily install a single-ended terminator on the SCSI IN port of the second enclosure, as shown in Figure 4-2.

  6. Connect the enclosures to different power sources.

  7. Power on the node and the enclosures.

  8. Find the paths to the host adapters. 


    {0} ok show-disks
a) /pci@1f,4000/pci@4/SUNW,isptwo@4/sd
b) /pci@1f,4000/pci@2/SUNW,isptwo@4/sd

    Identify and record the two controllers that will be connected to the storage devices, and record these paths. Use this information to change the SCSI addresses of these controllers in the nvramrc script. Do not include the /sd directories in the device paths.

  9. Edit the nvramrc script to set the scsi-initiator-id for the host adapters on the first node.

    For a list of nvramrc editor and nvedit keystroke commands, see Appendix B, NVRAMRC Editor and NVEDIT Keystroke Commands.

    The following example sets the scsi-initiator-id to 6. The OpenBoot PROM Monitor prints the line numbers (0:, 1:, and so on).

    Caution - Caution -

    Insert exactly one space after the first double quote and before scsi-initiator-id. 


    {0} ok nvedit 
0: probe-all
1: cd /pci@1f,4000/pci@4/SUNW,isptwo@4
2: 6 " scsi-initiator-id" integer-property 
3: device-end 
4: cd /pci@1f,4000/pci@2/SUNW,isptwo@4 
5: 6 " scsi-initiator-id" integer-property 
6: device-end 
7: install-console 
8: banner <Control C> 
{0} ok

  10. Store the changes.

    The changes you make through the nvedit command are done on a temporary copy of the nvramrc script. You can continue to edit this copy without risk. After you complete your edits, save the changes. If you are not sure about the changes, discard them.

    • To store the changes, type:


      {0} ok nvstore
{0} ok

    • To discard the changes, type:


      {0} ok nvquit
{0} ok

  11. Verify the contents of the nvramrc script you created in Step 9.

    If the contents of the nvramrc script are incorrect, use the nvedit command to make corrections.


    {0} ok printenv nvramrc 
nvramrc =             probe-all
                      cd /pci@1f,4000/pci@4/SUNW,isptwo@4
                      6 " scsi-initiator-id" integer-property 
                      device-end 
                      cd /pci@1f,4000/pci@2/SUNW,isptwo@4
                      6 " scsi-initiator-id" integer-property  
                      device-end  
                      install-console
                      banner
{0} ok

  12. Instruct the OpenBoot PROM Monitor to use the nvramrc script.


    {0} ok setenv use-nvramrc? true
use-nvramrc? = true
{0} ok

  13. Boot the first node and wait for it to join the cluster.


    {0} ok boot -r

    For more information, see Sun Cluster 3.0 System Administration Guide.

  14. On all nodes, verify that the DIDs have been assigned to the disk drives in the enclosure.


    # scdidadm -l

  15. Shut down the second node.


    # scswitch -S -h nodename
# shutdown -y -g 0

  16. Power off the second node.

  17. Install the host adapters in the second node.

    For the procedure on installing host adapters, see the documentation that shipped with your nodes.

  18. Connect the enclosures to the host adapters by using single-ended SCSI cables.

    Figure 4-3 Example of a StorEdge MultiPack enclosure mirrored pair

    Graphic

  19. Without allowing the node to boot, power on the second node. If necessary, abort the system to continue with OpenBoot PROM Monitor tasks.

  20. Verify that the second node sees the new host adapters and disk drives.


    {0} ok show-disks

  21. Verify that the scsi-initiator-id for the host adapter on the second node is set to 7.

    Use the show-disks command to find the paths to the host adapters connected to these enclosures. Select each host adapter's device tree node, and display the node's properties to confirm that the scsi-initiator-id for each host adapter is set to 7.


    {0} ok cd /pci@1f,4000/pci@4/SUNW,isptwo@4
{0} ok .properties
...
scsi-initiator-id        00000007
...
{0} ok cd /pci@1f,4000/pci@2/SUNW,isptwo@4
{0} ok .properties
...
scsi-initiator-id        00000007

  22. Boot the second node and wait for it to join the cluster.


    {0} ok boot -r

  23. On all nodes, verify that the DIDs have been assigned to the disk drives in the enclosure.


    # scdidadm -l

  24. Perform volume management administration to add the disk drives in the array to the volume management configuration.

    For more information, see your Solstice DiskSuite or VERITAS Volume Manager documentation.